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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The non-fancy version of the from_cpuset uses CPU_SETSIZE as if it
represents the number of bytes in the cpuset, while it is actually
the number of bits. This leads to out-of-bounds accesses on the
cpu_set_t in the big-endian case. Basically all uses of CPU_SETSIZE
have to be divided by 8. This is done correctly in the fancy version
of from_cpuset.
In addition, the big-endian case is completely wrong to begin with.
All standard C libraries that I know of implement cpu_set_t as an
unsigned long array, so both for big and little endian, the least
significant bits are in the beginning of the array. Therefore, the
approach taken for the little endian case is equally valid. We only
need special handling for big endian when CPU_SETSIZE is large and
we use an unsigned long long to get more bits out.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
setsid_main 53 96 +43
packed_usage 30846 30833 -13
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Implement -n (read/write without ecc).
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This makes busybox i2cdump compatible with the upstream version, which
also displays the numeric error value in case of a block read failure.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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We should bail-out if i2c_smbus_read_block_data() or
i2c_smbus_read_i2c_block_data() return 0 or less. Add the missing check
for the former and fix the existing for the latter.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Currently we're calling i2c_smbus_read_block_data() for both 'i' and 's'
mode parameters. If the bus doesn't support SMBus block mode, then the
i2c access ioctl() fails. Make i2cdump behave compatibly with upstream
version by calling i2c_smbus_read_i2c_block_data() for I2C block.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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We currently read data twice in byte mode. Add a check to avoid calling
i2c_smbus_read_i2c_block_data() if we're not in I2C or SMBus block mode.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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If the bus doesn't support SMBus Quick Write or Receive Byte commands
and we're running in auto mode all addresses will be skipped resulting
in an empty table being printed.
This is caused by not restoring the auto mode after it's been changed
for certain address ranges - we need an additional variable to hold the
temporary state.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The virtual y can be larger - and we can be even writing there since
we are taking into account the y offset. Avoids possible crash.
But use it only if set, seems it is not set if virtual area is not
allocated (though, often fbcon allocates some scrollback area).
Signed-off-by: Timo Teräs <timo.teras@iki.fi>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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MONOTONIC_SYSCALL=y by default
FEATURE_LAST_SMALL is gone: now FEATURE_LAST_FANCY is a "bool", not a "choice".
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Custom linker script 'busybox_ldscript' found, using it
function old new delta
static.str 4 - -4
static.passwd 4 0 -4
bb_ask 322 311 -11
ether_print 63 47 -16
UNSPEC_print 82 66 -16
INET_sprint 59 38 -21
INET6_sprint 54 30 -24
make_human_readable_str 292 235 -57
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 0/7 up/down: 0/-153) Total: -153 bytes
text data bss dec hex filename
939880 992 17480 958352 e9f90 busybox_old
939736 992 17456 958184 e9ee8 busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
print_intel_cstates 499 511 +12
file_insert 355 364 +9
dpkg_main 2944 2940 -4
ifenslave_main 645 640 -5
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/2 up/down: 21/-9) Total: 12 bytes
text data bss dec hex filename
937564 932 17676 956172 e970c busybox_old
937164 932 17676 955772 e957c busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Benefits are: drops reference to out-of-line putchar(), fixes a few cases
of failed string merge.
function old new delta
i2cdump_main 1488 1502 +14
sha256_process_block64 423 433 +10
sendmail_main 1183 1185 +2
list_table 1114 1116 +2
i2cdetect_main 1235 1237 +2
fdisk_main 2852 2854 +2
builtin_type 119 121 +2
unicode_conv_to_printable2 325 324 -1
scan_recursive 380 378 -2
mkfs_minix_main 2687 2684 -3
buffer_fill_and_print 178 169 -9
putchar 152 - -152
------------------------------------------------------------------------------
(add/remove: 0/2 grow/shrink: 7/4 up/down: 34/-167) Total: -133 bytes
text data bss dec hex filename
937788 932 17676 956396 e97ec busybox_old
937564 932 17676 956172 e970c busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Rename the defines not present in linux UAPI headers to better reflect
their purpose.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Most applets include linux' user API headers instead of duplicating
the definitions. Make it the case for i2c-tools as well.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Commit 1ecb996 attempted to make read_lines() use the last column of
the terminal (as re_wrap() did). There were two problems with this:
- The size of the buffer allocated for lines wasn't increased to allow
for the extra character.
- The test for width overflow was moved after the point where the
next character was added to the buffer. This caused a buffer overflow
in certain circumstances.
For example, if the line beyond the end of the display was wider than
the display read_lines() would initially read the partial line into a
buffer. When the user moved down read_lines() would be called again
to ensure the rest of the line was read. This would place the next
character in the partial line before checking for overflow.
This can be fixed by moving the test for overflow back to where it was
before commit 1ecb996 and changing the comparison to `>` rather than
`>=`.
There are two other places where buffers are created without allowing
for width+1 characters.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Test explicitly for REOPEN flags: update_num_lines is called
unconditionally so (num_lines != NOT_REGULAR_FILE) is also true when
num_lines contains a valid number of lines.
The call to fstat doesn't need to be in #if ENABLE_FEATURE_LESS_FLAGS:
the whole function is already in such a test.
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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When read_lines tests whether a character will fit on the current
line it checks the *next* character but in case of overflow doesn't
display the *current* one. This results in the last column of the
terminal never being used.
The test in re_wrap (used when the terminal width changes or line
numbers are enabled/disabled) is different: it does allow the use
of the final column.
function old new delta
read_lines 764 770 +6
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 6/0) Total: 6 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Much of the code refers to lines using indices into the flines
array (which splits lines into portions that fit on the terminal).
In some cases this is wrong and actual line numbers should be
used:
- when lines are being truncated rather than wrapped (-S flag)
- when line numbers have been entered by the user
Also fix a bug in numeric input and improve the display at EOF.
function old new delta
goto_lineno - 111 +111
cap_cur_fline - 101 +101
buffer_to_line - 56 +56
buffer_up 35 66 +31
less_main 2606 2615 +9
goto_match 125 127 +2
buffer_down 81 56 -25
buffer_line 64 - -64
------------------------------------------------------------------------------
(add/remove: 3/1 grow/shrink: 3/1 up/down: 310/-89) Total: 221 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Add a function to package the test that detects whether enough has
been read from the file to allow a screenful to be displayed.
Also use this to determine when to display '(END)' in the status
line. The previous code was incomplete and didn't handle truncated
lines (-S flag) properly.
function old new delta
at_end - 63 +63
status_print 111 109 -2
read_lines 819 764 -55
getch_nowait 319 264 -55
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/3 up/down: 63/-112) Total: -49 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Move the code to detect non-regular files to the point where the
file is being opened. If num_lines == READING_FILE guarantees
that the file is regular.
Detect when a file becomes unreadable between it first being opened
and the call to update_num_lines. Mark the file as being non-regular
so we don't try that again.
function old new delta
reinitialize 197 245 +48
update_num_lines 159 127 -32
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 48/-32) Total: 16 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
update_num_lines - 159 +159
m_status_print 409 266 -143
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/1 up/down: 159/-143) Total: 16 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Make verbose status messages (-m/-M flags) behave more like the
real `less` command:
- fix display of line numbers so they're correct whether lines are
being truncated (-S flag) or wrapped.
- don't display total lines or percentage when lines are read from
stdin: we don't have that information until we reach EOF. When
we do reach EOF the additional information is displayed.
- when lines are read from a file count the total number of lines
so that we can display percentages. Counting lines is avoided
until the information is actually needed. If the user pages to
EOF the separate read pass can be avoided entirely.
Fixes Bug 7586
function old new delta
m_status_print 195 382 +187
safe_lineno - 35 +35
reinitialize 172 182 +10
read_lines 675 685 +10
buffer_fill_and_print 178 169 -9
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 3/1 up/down: 242/-9) Total: 233 bytes
Signed-off-by: Ron Yorston <rmy@pobox.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Introduce a library routine to package the idiom:
p = xmalloc(b, n);
memcpy(p, b, n);
and use it where possible. The example in traceroute used xzalloc
but it didn't need to.
function old new delta
xmemdup - 32 +32
last_main 834 826 -8
make_device 2321 2311 -10
common_traceroute_main 3698 3685 -13
readtoken1 3182 3168 -14
procps_scan 1222 1206 -16
forkchild 655 638 -17
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/6 up/down: 32/-78) Total: -46 bytes
Signed-off-by: Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Lines are rewrapped when the terminal width changes or line numbers
are enabled/disabled. The current calculation always adds eight to
the line length for a tab whereas it should only add enough to move
to the next tab stop.
This doesn't affect the display of lines, which is handled elsewhere
and gets tab stops right, but it does cause lines to be wrapped at
the wrong position.
Signed-off-by: Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Line numbers are displayed incorrectly on lines that have a search
pattern highlighted. The problem can be fixed by moving the call to
lineno_str in print_found above the while loop that alters the value
of the line pointer. However, a more substantial rewrite results in
savings.
function old new delta
buffer_print 688 697 +9
.rodata 156077 156045 -32
lineno_str 85 - -85
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 1/1 up/down: 9/-117) Total: -108 bytes
Signed-off-by: Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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The -S flag, to cause long lines to be truncated, was enabled by
FEATURE_LESS_DASHCMD. This is non-obvious and -S is useful even
if the '-' command isn't enabled.
function old new delta
.rodata 156045 156077 +32
packed_usage 30223 30244 +21
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 53/0) Total: 53 bytes
Signed-off-by: Ron Yorston <rmy@frippery.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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This patch removes stray empty line from busybox code
reported by script find_stray_empty_lines
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Akhilesh Kumar <akhilesh.k@samsung.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Since there are now more statements in the if block after the while loop
in list_i2c_busses_and_exit(), there's no need for a label.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Split i2cdump_main() into shorter functions. Simplify the code a bit.
Make block an array of ints so that we can store negative results of
read functions (fixes a bug found by Denys Vlasenko).
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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We should only warn the user about addresses to be skipped if
(mode == DETECT_MODE_AUTO).
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Addresses 0x00-0x02 shouldn't be scanned by default. This patch makes
'first' default to 0x03 and only enables lower addresses if '-a' option
is passed
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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We can't use i2c_set_slave_addr() in i2cdetect, as we have to check for
EBUSY after calling ioctl(I2C_SLAVE) and print 'UU' on busy addresses
instead of bailing-out.
While we're at it: reorder definitions of local vars in i2cdetect_main().
function old new delta
i2cdetect_main 703 744 +41
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 41/0) Total: 41 bytes
text data bss dec hex filename
826097 4164 9584 839845 cd0a5 busybox_old
826145 4164 9584 839893 cd0d5 busybox_unstripped
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
check_under - 20 +20
print_no_pop 27 32 +5
pop 33 24 -9
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 1/1 up/down: 25/-9) Total: 16 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Trying to access /dev/i2c/* on every error after opening /dev/i2c-* can
mislead users who e.g. don't have root access. Instead of bailing-out
with "permission denied" we currently print "no such file or directory".
Fix it by trying open("/dev/i2c/%d") only if we got ENOENT.
Upstream i2cdetect tries to get any info it can from /sys and /proc even
when invoked by an unprivileged user, but we don't want to add unnecessary
bloat.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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Calling 'i2cdetect -l' only displays usage and exits. Fix it by
correctly parsing command-line arguments.
Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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UTMP is SVID legacy, UTMPX is mandated by POSIX.
Glibc and uClibc have identical layout of UTMP and UTMPX, both of these
libc treat _PATH_UTMPX as _PATH_UTMP so from a user-perspective nothing
changes except the names of the API entrypoints.
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
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function old new delta
is_prefixed_with - 18 +18
complete_username 78 77 -1
man_main 737 735 -2
fsck_device 429 427 -2
unpack_ar_archive 80 76 -4
strip_unsafe_prefix 105 101 -4
singlemount 1054 1050 -4
rtc_adjtime_is_utc 90 86 -4
resolve_mount_spec 88 84 -4
parse_one_line 1029 1025 -4
parse_conf 1460 1456 -4
may_wakeup 83 79 -4
loadkmap_main 219 215 -4
get_irqs_from_stat 103 99 -4
get_header_cpio 913 909 -4
findfs_main 79 75 -4
fbsplash_main 1230 1226 -4
load_crontab 776 771 -5
expand_vars_to_list 1151 1146 -5
date_main 881 876 -5
skip_dev_pfx 30 24 -6
make_device 2199 2193 -6
complete_cmd_dir_file 773 767 -6
run_applet_and_exit 715 708 -7
uudecode_main 321 313 -8
pwdx_main 197 189 -8
execute 568 560 -8
i2cdetect_main 1186 1176 -10
procps_scan 1242 1230 -12
procps_read_smaps 1017 1005 -12
process_module 746 734 -12
patch_main 1903 1891 -12
nfsmount 3572 3560 -12
stack_machine 126 112 -14
process_timer_stats 449 435 -14
match_fstype 111 97 -14
do_ipaddr 1344 1330 -14
open_list_and_close 359 343 -16
get_header_tar 1795 1779 -16
prepend_new_eth_table 340 323 -17
fsck_main 1811 1794 -17
find_iface_state 56 38 -18
dnsd_main 1321 1303 -18
base_device 179 158 -21
find_keyword 104 82 -22
handle_incoming_and_exit 2785 2762 -23
parse_and_put_prompt 774 746 -28
modinfo 347 317 -30
find_action 204 171 -33
update_passwd 1470 1436 -34
------------------------------------------------------------------------------
(add/remove: 1/0 grow/shrink: 0/49 up/down: 18/-540) Total: -522 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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function old new delta
rdate_main 246 251 +5
show_entry 291 287 -4
daytime_stream 44 39 -5
packed_usage 30176 30168 -8
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/3 up/down: 5/-17) Total: -12 bytes
text data bss dec hex filename
929453 932 17684 948069 e7765 busybox_old
929411 932 17684 948027 e773b busybox_unstripped
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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https://bugs.debian.org/538685
dc requires whitespace between language elements.
We were requiring
1 2 + p
instead of the abbreviated
1 2+p
(for example).
function old new delta
stack_machine 97 126 +29
dc_main 117 79 -38
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/1 up/down: 29/-38) Total: -9 bytes
Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
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